Folding ladder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 14, 1990
Grant Date -
N/A
app pub date -
Mar 14, 1989
filing date -
Mar 14, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A folding ladder comprising of four straight sections each consisting of two uprights and four rungs equally spaced. The sections are connected with insulating hinged joints which can be tightened immovable or loosened movable by means of a lever handle thus allowing the adjustment of the ladder into various configurations.
First Claim
Family
International Classification(s)
Cited Art Landscape
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